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VCE123456789:
Also
How can athlete extend the amount of time they are able to work at above 100 % of their VO2 maximum?

lexitu:
Extend?

Anaerobic training - e.g. short interval, etc.

VCE123456789:
Idont unnderstand still. please explain

lexitu:
I hate the way they have phrased this. It's a reoccurring question in PE exams.

What above 100% of VO2 max. means is that the intensity is greater then what it would be if you were exercising at 100% VO2 max. You can't physically consume more oxygen but you can rely on the anaerobic systems to increase your intensity momentarily. You are definitely in oxygen deficit if you are doing this.

So to extend the amount of time you can work above 100% VO2 max you need to train anaerobically to target adaptations such as increased PC stores and ATP-PC splitting enzymes, etc. These will allow you to sustain high-intensity physical activity for longer.

VCE123456789:
Alright cool i inderstand now. SO basically VO2 max is the maximum amount of O2 you can take up, transport and utilise per minute. So in order to work greater than 100 percent VO2 max you rely on the anaerobic energy systems (no O2 present/required) to provide energy and to increase intensity momentarily.

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